ANGAN 2019, New Delhi, 9 September 2019
THIS PRESENTATION WAS SHARED BY Mr. Saurabh Diddi Director, Bureau of Energy Efficiency, New Delhi FOR THE SESSION: “ Policy Framework for Energy Efficiency in Buildings (Codes and Standards) ” DURING ANGAN 2019 ANGAN 2019, New Delhi, 9 September 2019
Energy Efficiency in Buildings New Delhi 3 Bureau of Energy Efficiency, Ministry of Power, Government of India
Introduction Established in 2002 under EC ACT - 2001 To discharge regulatory function on energy efficiency Provides the legal framework for promoting energy conservation activities: – Standards and Labelling for appliances & equipment – Energy Consumption norms for energy intensive industries – Demand Side Management (DSM) programme – Energy Conservation Building Code (ECBC) for commercial buildings. – Certification of Energy Auditors and Managers Mission Directorate for National Mission for Enhanced Energy Efficiency (NMEEE) Supported by States Designated Agencies at State level 4 Bureau of Energy Efficiency, Ministry of Power, Government of India
Government of India Initiatives for Buildings • Residential Buildings – Eco-Niwas Samhita 2018 – Energy Efficiency Labelling program • Commercial Buildings – Energy Conservation Buildings Codes for New Buildings – Super ECBC in States – PAT scheme for buildings – Labeling of Existing Buildings – Energy Efficiency Retrofits in Existing Buildings – Energy Efficient Components (Appliances & Materials) – Net Zero energy buildings 5 Bureau of Energy Efficiency, Ministry of Power, Government of India
India’s Electricity Scenario Electricity Consumption in 2016-17= 1066 BU TOTAL ELECTRICITY CONSUMPTION (BU) IN 2016-17 Electricity Consumption Pattern Other 7% 60% 33 % Commercial Railways & 50% 2% Residential & Traction Residential Commercial 40% Buildings Commercial 9% 30% Residential 24% 20% Agriculture 18% 10% 0% Industry 40% 0% 20% 40% 60% Source: Energy Statistics 2018 6 Bureau of Energy Efficiency, Ministry of Power, Government of India
Energy Efficiency in Residential Buildings 7 Bureau of Energy Efficiency, Ministry of Power, Government of India
Background • Residential buildings, today, account for nearly 24% of the total energy consumed. • Residential electricity consumption has shown rapid increase. • With increased built-up area and increasing affordability of air-conditioning, residential buildings to become the largest consumer of electricity. • The residential buildings expected to increase 2 times in terms of floor area by 2030 in India. • 12 million new affordable homes in urban areas under PMAY (Pradhan Mantri Awas Yojana) by 2022. 8 Bureau of Energy Efficiency, Ministry of Power, Government of India
Building Sector- Built up area and electricity consumption projection Residential Electricity Consumption Vs Area 7000 698 BU Residential Area (mn sqm) CAGR (GDP Per Capita) = 8% [VALUE] mn sqm Residential Electricity Consumption(Actual) (BU) 6000 CAGR (Residential Area) = 6% Residential Electricity Consumption in BU Residential Electricity Consumption CAGR (Electricity Consumption) = 8% (Projected) (BU) Residential Area (mn sqm) 5000 4000 3000 [VALUE] mn sqm 2000 111 BU 1000 0 Year 9 Bureau of Energy Efficiency, Ministry of Power, Government of India
10 Bureau of Energy Efficiency, Ministry of Power, Government of India
Eco-Niwas Samhita 2018 The code sets minimum performance standards for building envelope to limit heat gains (for cooling dominated climates) and limit heat loss (for heating dominated climates) through it. 11 Bureau of Energy Efficiency, Ministry of Power, Government of India
Focus Area • Eco-Niwas Samhita 2018 aims to improve thermal comfort and reduce energy use in residential buildings. The part-I primarily focuses on Building envelope (roof, walls, windows • and outside openings) Also, it sets minimum building envelope performance standards to • – Limit heat gains (for cooling dominated climates) and to limit heat loss (for heating dominated climates) – Ensuring adequate natural ventilation potential – Ensuring adequate daylighting potential . • Residential buildings built on plot area ≥ 500 m 2 (States and Municipal Corporations can lower this limit) – Individual houses – Multi-family housing – Flats – Group Housing 12 Bureau of Energy Efficiency, Ministry of Power, Government of India
Scope • The code applies to (a) ‘Residential buildings’ built on a plot area ≥500 m2 and (b) Residential part of ‘Mixed land -use building projects’, built on a plot area of ≥ 500 m2. • Part I – Building Envelope of ECBC-R focusses on only building design and envelope and electromechanical system is not considered in Part I. The code gives the following provisions to this effect: Building Envelope (except roof) • • Maximum value of residential envelope transmittance value (RETV) for building envelope (except roof) For Four climates applicable for four climate zones namely, Composite Climate, Hot-Dry Climate, Warm-Humid Climate, and Temperate Climate. • Maximum value of thermal transmittance of building For Cold Climate envelope (except roof) for Cold Climate zone (U envelope, cold). • Building Envelope-Roof Roof: Maximum value of thermal transmittance of roof (U roof) for all climate zones. 13 Bureau of Energy Efficiency, Ministry of Power, Government of India
Scope • The code sets minimum building envelope performance Openable window- standard for adequate natural ventilation potential by to-floor area ratio specifying minimum openable window-to-floor area ratio (WFRop). (WFRop). • The code sets minimum building envelope performance Visible light standard for adequate daylight potential by specifying transmittance minimum visible light transmittance (VLT) for the non- (VLT) opaque building envelope components. 14 Bureau of Energy Efficiency, Ministry of Power, Government of India
Expected Outcomes • Approx. 20% saving in cooling energy as compared to conventional building design Minimum 125 BU of saving in electricity for period 2018-2030 • Minimum 100 MT of CO2 equivalent abatement for period 2018-2030 • Energy Saving 20% reduction Cooling Energy (kWh/m2.y) 60 21.51 49 Billion Units per Year 13.69 5.19 1.04 Baseline (RETV: 19 Code compliant (RETV: W/m2) 15 W/m2) 2018 2022 2027 2030 15 Bureau of Energy Efficiency, Ministry of Power, Government of India
Expected Outcomes Proper design and shading of windows to reduce heat gains, adequate window size for natural ventilation and light weight and good thermal insulation (AAC blocks etc) to reduce heat gains, thus leading to Energy Efficient Homes. Daylight Ventilation Thermal Comfort Natural Monetary EE Homes Savings 16 Bureau of Energy Efficiency, Ministry of Power, Government of India
Energy Efficiency Label for Residential Buildings • Recently launched on February 26, 2019 by Hon’ble Minister of Power and New & Renewable Energy. Objectives: • To provide information to consumers for EE Homes Energy Sustainability for India To facilitate in meeting the Indian NDC Targets Market Transformation for Energy Efficiency in each Home 17 Bureau of Energy Efficiency, Ministry of Power, Government of India
Indicator for the proposed labelling program • Indicator : Energy Performance Index (EPI) • EPI = Annual Energy consumption (kWh/yr)/built up area(m2) EPI Calculation = EPI for AC spaces at 24 degrees set-point (E1) + EPI • for other spaces at IMAC NV set-points (E2) and EPI for other appliances (E3) (constant value) *E3 includes appliances *E1 and E2 includes following systems • Microwave oven • Building envelope characteristic • Grinder • Lighting system • Refrigerators • Comfort system (AC) • TV • Water Pump • Washing Machine 18 Bureau of Energy Efficiency, Ministry of Power, Government of India
Star rating benchmarking • For Composite, Warm and Humid, and Hot and Dry: 25% area operated at 24 ° C and 75% area operated at IMAC-NV set-point temperature • For Temperate: 100% area operated at IMAC-NV set-point temperature • E1 and E2 includes following systems: Building envelope characteristic; Lighting system; and Comfort system (AC) Residential Building Star Rating Plan Period: 14 December 2018 to 31 December 2024 Star Rating Energy Performance Index (E1 + E2) of Dwelling Unit Composite Warm & Humid Hot and Dry Temperate 52 < EPI ≤ 60 58 < EPI ≤ 64 55 < EPI ≤ 67 28 < EPI ≤ 31 1-star 45 < EPI ≤ 52 49 < EPI ≤ 58 47 < EPI ≤ 55 24 < EPI ≤ 28 2-star 37 < EPI ≤ 45 39 < EPI ≤ 49 38 < EPI ≤ 47 21 < EPI ≤ 24 3-star 29 < EPI ≤ 37 30 < EPI ≤ 39 29 < EPI ≤ 38 17 < EPI ≤ 21 4-star EPI ≤ 29 EPI ≤ 30 EPI ≤ 29 EPI ≤ 17 5-star 19 Bureau of Energy Efficiency, Ministry of Power, Government of India
Key stages of proposed labelling scheme Occupancy Construction Final Asset Certificate permit is issued Label Obtained New Dwelling Final Asset “Applied For“ Label labelling Existing building with certain assumptions for Operation Not mandatory in case the builder is availing the Existing Dwelling label at occupancy certificate stage 20 Bureau of Energy Efficiency, Ministry of Power, Government of India
Recommend
More recommend
